Advanced Energy Storage Technologies: Market Research

Advanced Energy Storage Technologies: Patent Trends and Company Positioning
Report by Dr Victor Zhitomirsky of PatAnalyse and Dr Peter Harrop of IDTechEx
Overview
Dr Victor Zhitomirsky of PatAnalyse and Dr Peter Harrop of IDTechEx have collaborated to produce the
world's first computer analysis of the previously impenetrable patent thicket surrounding Advanced Energy
Storage. A particular focus is electric vehicle technology such as traction batteries in general, lithium-ion
traction batteries, supercapacitors/ ultracapacitors, battery management systems and charging. However, there
is thorough coverage of lithium batteries and supercapacitors in general for those more widely interested in
these topics. The results are startling. Some of the most respected giants of the industry are dismantling their
R&D in order to pump money into production facilities just when the technology is rapidly changing. The
company with a strong, broad patent portfolio, that is the fastest increasing one, is rarely mentioned in the
press as a leader in this subject. Our measurements reveal that one giant landing the biggest orders rarely has
its huge portfolio of patents cited, a warning on IP quality.
Supercapacitors (ultracapacitors) have a surge in demand and interest from EV manufacturers. So why is
supercapacitor patenting stagnant and why is Europe largely ignoring the subject? We reveal many other
openings for newcomers and opportunities for giants to realign their research. We reveal the most prolific
inventors and the fine details of patent trends in many aspects of anode and cathode chemistry for example.
Our sophisticated computer analysis provides the first clarity on the very different technological emphasis of
the research being carried out by a host of companies and research organisations worldwide. We give our
expert opinion on this.
Report scope
The patent search strategy has been carefully developed via several rounds of iteration. As a rule of thumb, it
takes at least five years from invention to the first product on the market. In order to focus on the `hidden'
R&D efforts which have not yet materialised as new products on the market, the initial study has been
restricted to patents with a priority date from 2005. However because of a significant increase in the rate of
patenting in this area, this initial patent portfolio contains over half of all patents with a priority from 1990 in
this area. About 2,800 original Assignee names from the original bibliographic records were combined into
200 Top Assignees. The proprietary de-duplication algorithm aggregated about 12,000 simple patent families
from about 40,000 national patents. Only 3% of the patent families have been left unassigned and it was
further found that about 12% of the patent portfolio is assigned to small players with fewer than one invention
per year. The remaining 85% of the patent portfolio is assigned to about 250 companies with about 66% of the
patent portfolio assigned to the top 50 companies in terms of patenting. Almost a hundred Patent Maps have
been provided in the report to facilitate the detailed understanding of various aspects of the patent landscape.
Report in figures
Patents screened 100,000 Patents classified 40,000 Patent codes searched 2,600 Inventors searched 1,200
Advanced Energy Storage Technologies: Patent Trends and Company Positioning<br>

Keyword used 1,250 Assignee searched 110
"PatAnalyse offers a really intelligent way to cope with the huge volume of patent information available
worldwide." Dr. Bakuri Lanchava, European Patent Attorney
table Of Content:
1. Executive Summary And Conclusions
1.1. Who Needs This Report
1.2. Methodology
1.3. Report Layout
1.4. Indicative Results
1.5. Overview Of Patents
1.5.1. Advanced Energy Storage
1.5.2. Lithium-ion Batteries
1.5.3. Further Details Of Anode Chemistry
1.5.4. Further Details Of Cathode Chemistry
1.5.5. Lithium Traction Batteries For Evs In Particular
1.5.6. Traction Batteries In General
1.5.7. Supercapacitors
1.5.8. Charging And Battery Management Systems
1.6. Commercial Situation Today
2. Introduction
2.1. Patent Mapping And Landscaping
2.2. Preventing Wilful Infringement Exposure
2.3. The Focus Of Current Study
2.4. Patent Search Strategy
2.5. Report Layout
3. General Overview Of Combined Portfolio
3.1. Top 50 Assignees Vs Country Of Invention
3.2. The Lag Between Publication Year And Priority Year
3.3. Top 50 Assignees Vs Priority Years
3.4. Time Line For Different Countries
3.5. Top 50 Assignees And Their Strategy For Applying To National Patent Offices
3.6. Country Of Invention Vs National Patent Office Country
3.7. Citation Links Between Top Assignees
3.8. Most Prolific Inventors As A Measure Of Aggressive Patent Strategies
4. Generic Lithium Battery Technologies
4.1. Introduction

4.2. Top 50 Assignees Vs Technical Categories
4.4. Technical Categories Vs Priority Years
4.5. Countries Of Origin Vs Priority Years
4.6. Technical Categories Vs Countries Of Origin
4.7. Technical Categories Vs National Patent Office Country
4.8. Further Details Of Anode Chemistry
4.15. Further Details Of Cathode Chemistry
5. Lithium Traction Batteries
5.3. Comparison Of Profiles For Top Companies In Lithium Traction Batteries
6. Traction Batteries In General
6.3. Comparison Of Profiles For Top Companies In Traction Batteries
7. Generic Supercapacitor Technologies

8. On-board Electric Vehicle Battery Management System And External Charging Equipment
8.3. Comparison Of Profiles For Top Companies In Battery Management
8.5. Countries Of Origin Vs. Priority Years
8.6. Technical Categories Vs. Countries Of Origin
9. Trading And Investment By The 71 Leading Li-ion Traction Battery Manufacturers And Idtechex Market
Forecasts
9.1. What Is Happening Today
9.2. Massive Investments
9.3. Market 2011-2021
9.4. Replacement Business
Appendix 1: About Patanalyse
Appendix 2: About Idtechex
appendix 2: Idtechex Publications And Consultancy
Appendix 3: Welcome To The World Of Electric Vehicles
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